Returns a GridView of all the "scope rules" for the standard search index of Windows Search

Show-SearchScopeRules.ps1

# Returns a visual list via PowerShell's Out-GridView of all the "scope rules" for the standard search index
# in Windows Search. These are objects that represent files and folders to be included in or excluded from
# the search index while Windows Search is indexing (also called "crawling") your files.
# This code is basically from here (except for some re-formatting and new comments by me [Jarkko Kniivilä aka
# 'jkniiv']):
#   https://powertoe.wordpress.com/2010/05/17/powershell-tackles-windows-desktop-search/
# See also the following script (not mine) for inspiration if you're interested:
#   https://github.com/IntelliTect/PSToolbox/blob/master/Functions/WindowsSearchIndex.ps1

# Load the dll (easiest to be found here https://github.com/IntelliTect/PSToolbox/tree/master/Lib)
Add-Type -Path .\Microsoft.Search.Interop.dll

# Create an instance of CSearchManagerClass
$searchManager = New-Object Microsoft.Search.Interop.CSearchManagerClass

# We are interested in the standard search index (a search index is also known as a catalog in indexing
# and searching jargon)
$catalog = $searchManager.GetCatalog("SystemIndex")

# We need the scope rule manager for the crawler, i.e. the indexer part of Windows Search
$crawlScopeManager = $catalog.GetCrawlScopeManager()

# Next we set some variables to use in enumerating the results
$scopeRules = @() # The array that will hold our scope rules
[Microsoft.Search.Interop.CSearchScopeRule]$scopeRule = $null # A single scope rule. This will be passed 
                                                              # as a reference to the enumeration process.
                                                              # It will receive the scope rule as we
                                                              # enumerate.
$begin = $true # A variable to test for the first run of the enumeration

# Let's grab the enumeration object from the scope rule manager and start enumerating
$scopeRulesEnum = $crawlScopeManager.EnumerateScopeRules()
while ($scopeRule -ne $null -or $begin) { # We either have a scope rule or we're just beginning
    $scopeRulesEnum.Next(1, [ref]$scopeRule, [ref]$null)
    $scopeRules += $scopeRule
    $begin = $false
}

# Finally, let's show what we got :)
$scopeRules | Out-GridView -Wait